Here you have shown yourself that progress slows down and doesnt speed up. 8.9/0.35 = ~25x more performance in 10 years from 2006 to 2016. 104.8/8.9 = ~12x more performance in 10 years from 2016 to 2026. Growth has dropped 50%.
We went from adding 8 teraflops in a decade, to adding almost 100 the next decade. If we add "only" 400 more teraflops in the next decade the graph will make that initial growth look flat in comparison, even though your math would show that we are basically stalled out.
It’s like claiming that a company that goes from making $1 to $1k to $100k to $1mm in a 4 year period has decelerating growth.
Because it is decelerating growth. There is a reason why we use YoY percentage in annual and financial reporting.